JPH0567205U - Rubber plate position control device for rotary tiller - Google Patents

Abstract

(57) [Summary] [Purpose] The flow of cultivated soil lumps is prevented by preventing cultivated soil lumps, weeds, straws, etc. from adhering to the forks that receive and support the rubber plate hanging from the back side of the rotary cover from below. An object of the present invention is to provide a rubber plate position restricting device for a rotary cultivating device, which can be satisfactorily held and the surface of a field can be finished evenly. A furrow forming operation position Z in which a plurality of forks 22 arranged in a comb-teeth shape on the back surface side of a rotary cover 16 are mounted back to back at substantially the same position as the plowing pawls 12 and 12a with respect to the pawl shaft 13. It was arranged corresponding to the vicinity of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rubber plate position restricting device for a rotary tiller.

[0002]

[Prior Art]

 A rotary cultivator, which is used to cultivate a field while being pulled by a tractor, is equipped with a rotary cover that covers the upper and the rear of the cultivating claw, and the rotary cover is generally a fixed main cover and a rear end of the rotary cover. It is composed of a rear cover that is pivotably attached to the upper and lower parts. In such a rotary cultivator, a rubber plate is hung in a curtain shape on the rear rear surface side of the main cover in order to close the space between the main cover and the rear cover and prevent soil from adhering to the rear surface of the rear cover. It has been proposed that a fork is supported on the back surface of the main cover in a cantilevered manner in a comb shape so as to receive the fork from below so as to prevent the fork from being wound around the tiller.

[0003]

[Problems to be solved by the device]

 However, conventionally, the forks that receive the rubber plate are arranged in a comb-tooth shape at equal intervals in the left and right sides of the tillage width direction regardless of the nail arrangement, that is, without considering the scattering direction of the tillage soil blocks. Therefore, as shown in Fig. 3, one of the many forks (a) is located above the position where the adjacent left claw (b) and right claw (c) face each other, that is, above the ridge (d) forming action position. The problem is that a large amount of plowing claws (b) and plowing soil blocks, rice plants, weeds, straws, etc. hitting the fork (b) by the fork (b) and attaches to the fork surface. was there. When the amount of adhered matter (e) such as cultivated soil mass on the fork (a) increases, the fork (a) gradually forms a dumpling with the adhered matter (e), and the smooth flow of the cultivated soil mass is obstructed and the field surface is leveled. Can not be finished. In particular, the inside of the rotary cover is difficult to see from the outside and is narrow, which makes it difficult to confirm the adhered state of soil or the like to the fork (a) and is difficult to clean. The amount of soil, etc., is gradually increasing, and the above-mentioned problems are even more pronounced.

[0004]

[Means for Solving the Problems]

 The present invention is made based on the above-mentioned actual condition, and a rubber plate is hung inside the rotary cover, and the rubber plate is cantilever-supported on the back surface of the rotary cover in a comb shape. In a rotary tiller that receives from below with a fork to prevent it from winding around the tiller, the fork is mounted back to back at the same position of the tiller as the tiller and the nail shaft. The gist is that they are placed at appropriate intervals so as to correspond to the vicinity of the position.

[0005]

[Action]

 As a result of the fork being located at a position outside the direction in which the soil mass is blown off by the plowing claw, the amount of plowing soil mass, weeds, straw, etc. attached to the forks is greatly reduced, and the flow of the soil mass is maintained in a uniform state. ..

[0006]

【Example】

 The structure of the present invention will be described with reference to an embodiment shown in the drawings. A side-drive type hitch frame 5 is mounted behind a tractor (this machine) 1 via a lower link 2, a top link bracket 3 and a top link 4. The rotary 6 is detachably connected. The rotary 6 is on the left side in the traveling direction of the pipe frames 9 and 10 extending on both sides from a central gear case 8 to which power is transmitted from the PTO shaft 7 of the machine 1 through a universal joint shaft (not shown). The transmission case 11 and the side plates (not shown) are fixed to the right side, respectively, to form a side drive type rotary 6. Then, between the lower part of the transmission case 11 and the side plate, the claw shaft 13 having a large number of plowing claws (right claws) 12 with the toes pointing to the right and a plurality of plowing claws (left claws) 12a with the toes pointing to the left rotates. It is installed freely. Reference numeral 14 denotes an arc-shaped main cover, and an arc-shaped movable rail R is connected to the rear end of the movable rail R so that the movable rail R can be adjusted back and forth. A rear cover 15 having the same width as the main cover 14 is a fulcrum pin at the rear end of the movable rail R. A rotary cover 16 is formed by the shaft 16a which is rotatably supported by a shaft 16a. Reference numeral 17 is a side cover. The transmission case 11 is provided near the one side end (left side end) of the main cover 14 in a state of being embedded in the width of the rotary cover 16, and the transmission case 11 is provided on the front surface of the transmission case 11. A ski 18 having a ski width extending over substantially the entire width is fixed by a mounting bolt 19 so that the soil of the transmission case 11 portion is skived by the ski 18 and is pulled inward along the ski slope. After that, while being crushed by the outward plowing claw (leftward claw) 12a, it is blown to the outside and backfilled in the ski mark.

By the way, on the rear rear surface side of the main cover 14, a rubber plate 20 is hung and suspended in a hanging curtain shape over substantially the entire width of the tilling width, and the rubber plate 20 is wound around the tilling claws 12 and 12a. In order to prevent this, a fork 22 which is cantilever-supported integrally with the rubber plate 20 in a comb-like manner on the back surface of the main cover 14 by a mounting bolt 21 or the like is supported and supported from below. As shown in FIG. 2, the fork 22 has a rightward claw 12 and a leftward claw 12a which are attached to the claw shaft 13 at approximately the same positions in a back-to-back manner in the vicinity of a forming action position Z of a ridge groove a. They are arranged at appropriate intervals. Since the forks 22 are arranged so as to correspond to the arrangement of the tillage claws 12 and 12a, the facing intervals of the forks 22 are not constant. Further, there are various ways of arranging the tilling claws 12 and 12a other than that shown in FIG. 2, so that each fork 22 is arranged correspondingly. Incidentally, the tilling claws mounted back to back at both ends of the claw shaft 13 are inwardly facing claws as shown in the figure in order to keep the tilling width constant. It is located above the part.

In the above structure, at the time of tilling work, the soil in the field is tilled by the tilling claws 12 and 12a, and the tilled soil mass b collides against the back surface of the main cover 14 and is crushed to form an arc surface of the main cover 14. Is bounced back along. By the way, the flow of the cultivating soil mass b due to the rotation of the tilling claws 12 and 12a depends on the direction of the claws. That is, as shown by the arrow in FIG. 2, the cultivated soil mass b flows rightward in the case of the rightward claw 12 and flows leftward in the case of the leftward claw 12a, and the cultivated soil mass b is concentrated in the zone X indicated by the diagonal lines. Therefore, the cultivated soil mass b is moved inward toward each other to form a ridge c at a position where the adjacent left and right claws face each other, and the claw shaft 13 is formed into a back-to-back shape at substantially the same position. A ridge groove a is formed at the mounted position Z (when the back-to-back claws are in opposite directions, the cultivated soil mass b is distributed to the left and right, and in the same direction, it is located to one side on the left and right). In the present invention, each fork 22 is arranged corresponding to the vicinity of the forming action position Z of the ridge groove a formed by the tilling claws 12 and 12a mounted back to back at substantially the same position with respect to the claw shaft 13. Therefore, as a result of each fork 22 being located at a position deviated from the direction in which the plowing soil mass b is splashed by the tilling claws 12 and 12a, adhesion of the plowing soil mass b, weeds, straws, etc. to the fork 22 is greatly reduced. Therefore, the soil and weeds attached to the fork 22 do not gradually increase and overhang into the scattering space of the cultivated soil mass, so that the flow of the cultivated soil mass b is always maintained well during the work, and the field surface is Finished evenly. After the ridge c is formed, the ridge surface is further leveled by the subsequent leveling action of the rear cover 15. It should be noted that the adhesion of soil or the like to the rear surface of the rear cover 15 is prevented by the rubber plate 20 as much as possible, and the soil or the like adhered to the rear surface of the main cover 14 is naturally detached and dropped by the striking action of the subsequent cultivated soil mass b.

[0009]

[Effect of the device]

 Since the present invention is configured as described above, as a result of the fork being located at a position away from the direction in which the soil clumps are blown by the tilling claws, cultivated soil clumps, weeds, straws, etc. are significantly reduced from attaching to the forks. As the flow of cultivated soil mass is maintained in a uniform state, the field surface can always be finished evenly.

[Brief description of drawings]

FIG. 1 is a side view of a rotary tiller equipped with the present invention.

FIG. 2 is an explanatory view showing a flow of a tilling soil mass and an arrangement of forks according to an arrangement of tilling claws.

FIG. 3 is an explanatory view showing a conventional example of fork arrangement and a flow of cultivated soil mass.

[Explanation of symbols]

 6 Rotary 12 Tilling Claw (Right Claw) 12a Tilling Claw (Left Claw) 13 Claw Shaft 14 Main Cover 15 Rear Cover 16 Rotary Cover 20 Rubber Plate 22 Fork a Rough Groove b Tillage Mass c Ridge Z Ridge Forming Position

Claims (1)

[Scope of utility model registration request] 1. A rubber plate is hung inside a rotary cover, and the rubber plate is received from below by a fork that is cantilever-supported in a comb-like shape on the back surface of the rotary cover and is wound around a tilling claw. In the rotary cultivating device configured to prevent the above, the forks are arranged at appropriate intervals in the vicinity of the ridge-groove forming position where the cultivating claws are mounted back to back at substantially the same position with respect to the claw shaft. A rubber plate position regulating device for a rotary cultivator, which is characterized in that